/* ═══════════════════════════════════════════════
   RESET & CSS VARIABLES
═══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #03030a;
  --bg2:     #07071a;
  --card:    #080d1a;
  --border:  #0d1a35;
  --text:    #e2e8f0;
  --text2:   #7a8fa6;
  --text3:   #2a3a55;
  --font:    'Space Grotesk', sans-serif;
  --mono:    'JetBrains Mono', monospace;
  --r:       12px;
  --ease:    cubic-bezier(0.23, 1, 0.32, 1);

  /* Per-section accent — changed by JS on scroll */
  --accent:  #f97316;
  --accent2: #c2410c;
  --glow:    rgba(249,115,22,0.2);
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow-x: hidden;
  line-height: 1.6;
  cursor: none;
  transition: --accent 0.6s;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.rel { position: relative; z-index: 1; }
.accent { color: var(--accent); transition: color 0.6s; }

/* ── Accent colour transitions ─────────────────── */
[data-color="cyan"]   { --accent: #00d4ff; --accent2: #0088ff; --glow: rgba(0,212,255,0.2); }
[data-color="blue"]   { --accent: #3b82f6; --accent2: #1d4ed8; --glow: rgba(59,130,246,0.2); }
[data-color="teal"]   { --accent: #06b6d4; --accent2: #0e7490; --glow: rgba(6,182,212,0.2); }
[data-color="purple"] { --accent: #8b5cf6; --accent2: #6d28d9; --glow: rgba(139,92,246,0.2); }
[data-color="pink"]   { --accent: #ec4899; --accent2: #be185d; --glow: rgba(236,72,153,0.2); }
[data-color="green"]  { --accent: #10b981; --accent2: #059669; --glow: rgba(16,185,129,0.2); }
[data-color="orange"] { --accent: #f97316; --accent2: #c2410c; --glow: rgba(249,115,22,0.2); }

/* ── Custom Cursor ─────────────────────────────── */
#cursor {
  position: fixed; width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%; pointer-events: none; z-index: 9999;
  transform: translate(-50%,-50%);
  transition: background 0.5s, transform 0.1s, width 0.2s, height 0.2s;
  mix-blend-mode: difference;
}
#cursor-ring {
  position: fixed; width: 38px; height: 38px;
  border: 1.5px solid var(--accent);
  border-radius: 50%; pointer-events: none; z-index: 9998;
  transform: translate(-50%,-50%);
  transition: border-color 0.5s, width 0.25s, height 0.25s;
  opacity: 0.6;
}

/* ── Loader ────────────────────────────────────── */
#loader {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 1.5rem;
  transition: opacity 0.8s var(--ease), visibility 0.8s;
}
#loader.out { opacity: 0; visibility: hidden; pointer-events: none; }

.ld-photo {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  box-shadow: 0 0 30px var(--glow);
  animation: ldPulse 1.5s ease infinite;
}
@keyframes ldPulse {
  0%,100% { box-shadow: 0 0 20px var(--glow); }
  50%      { box-shadow: 0 0 50px var(--accent), 0 0 80px var(--glow); }
}
.ld-ring {
  width: 70px; height: 70px; position: relative;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin-top: -10px;
}
.ld-text {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.25em; color: var(--accent);
}
.ld-dots { animation: blink 0.7s step-end infinite; }
.ld-bar { width: 180px; height: 1px; background: var(--border); position: relative; overflow: hidden; }
.ld-fill {
  position: absolute; top: 0; left: 0; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  width: 0; animation: ldFill 1.6s var(--ease) forwards;
  box-shadow: 0 0 10px var(--accent);
}
@keyframes ldFill { to { width: 100%; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes blink { 50% { opacity: 0; } }

/* ── Navbar ────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 3rem;
  transition: all 0.4s var(--ease);
}
#navbar.scrolled {
  background: rgba(3,3,10,0.90);
  backdrop-filter: blur(24px) saturate(1.5);
  padding: 0.9rem 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  box-shadow: 0 4px 40px rgba(0,0,0,0.4);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 1.3rem; font-weight: 700;
}
.nav-photo {
  width: 32px; height: 32px; border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--accent);
  box-shadow: 0 0 10px var(--glow);
  transition: box-shadow 0.5s, border-color 0.5s;
}
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.8rem; font-weight: 500;
  color: var(--text2); letter-spacing: 0.06em; text-transform: uppercase;
  position: relative; transition: color 0.2s;
}
.nav-links a::before {
  content: attr(data-text);
  position: absolute; top: 0; left: 0;
  color: var(--accent);
  clip-path: polygon(0 0, 0 0, 0 100%, 0 100%);
  transition: clip-path 0.3s var(--ease);
  white-space: nowrap;
}
.nav-links a:hover::before { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
.nav-cta {
  padding: 0.45rem 1.2rem !important;
  border: 1px solid var(--accent) !important;
  border-radius: 6px; color: var(--accent) !important;
  transition: background 0.3s, box-shadow 0.3s !important;
}
.nav-cta::before { display: none !important; }
.nav-cta:hover { background: var(--glow) !important; box-shadow: 0 0 20px var(--glow) !important; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: none; padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--text); transition: all 0.3s var(--ease); }
.nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
  background: var(--bg2); border-left: 1px solid rgba(255,255,255,0.05);
  z-index: 499; transition: right 0.4s var(--ease);
  padding: 5rem 2.5rem 2rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}
.mobile-menu.open { right: 0; }
.mob-photo { width: 60px; height: 60px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); margin-bottom: 0.5rem; }
.mobile-link { font-size: 1.2rem; font-weight: 600; color: var(--text2); transition: color 0.2s; }
.mobile-link:hover { color: var(--accent); }

/* ── Hero ──────────────────────────────────────── */
#hero {
  position: relative; height: 100vh; min-height: 700px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, transparent 15%, rgba(3,3,10,0.75) 70%, var(--bg) 100%);
  pointer-events: none; z-index: 1;
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center; max-width: 860px; padding: 0 2rem;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--accent); letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: 1.8rem; opacity: 0; transform: translateY(20px);
  border: 1px solid var(--glow);
  padding: 0.4rem 1rem; border-radius: 50px;
}
.e-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: dotPulse 2s ease infinite;
}
@keyframes dotPulse { 0%,100%{box-shadow:0 0 8px var(--accent)} 50%{box-shadow:0 0 20px var(--accent)} }

.hero-title {
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 700; line-height: 0.95;
  margin-bottom: 2rem; opacity: 0;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line span { display: block; }
.hero-title .line2 span {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 60%, #00ffee 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; background-size: 200%;
  animation: gradFlow 4s linear infinite;
}
@keyframes gradFlow { 0%,100%{background-position:0%} 50%{background-position:100%} }

.hero-title .line1 span { position: relative; display: inline-block; }
.hero-title:hover .line1 span::before {
  content: attr(data-text); position: absolute; top: 0; left: 0;
  color: var(--accent); animation: glitch1 0.25s steps(2) forwards;
  clip-path: polygon(0 0, 100% 0, 100% 35%, 0 35%);
}
.hero-title:hover .line1 span::after {
  content: attr(data-text); position: absolute; top: 0; left: 0;
  color: #ff6b35; animation: glitch2 0.25s steps(2) forwards;
  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
}
@keyframes glitch1 { 0%{transform:translateX(-5px);opacity:.8} 100%{transform:translateX(0);opacity:0} }
@keyframes glitch2 { 0%{transform:translateX(5px);opacity:.8}  100%{transform:translateX(0);opacity:0} }

.hero-typed {
  font-size: clamp(1rem, 2vw, 1.15rem); color: var(--text2);
  margin-bottom: 3rem; opacity: 0; transform: translateY(20px); line-height: 1.9;
}
.typed-wrap { font-family: var(--mono); color: var(--accent); }
.cursor-blink { animation: blink 0.8s step-end infinite; }

.hero-cta {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  opacity: 0; transform: translateY(20px);
}
.hero-stats {
  position: absolute; bottom: 4rem; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 2rem; z-index: 2; opacity: 0;
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--mono); font-size: 1.9rem; font-weight: 700;
  color: var(--accent); text-shadow: 0 0 20px var(--glow);
  transition: color 0.5s, text-shadow 0.5s;
}
.stat-plus { color: var(--accent); font-size: 1.1rem; transition: color 0.5s; }
.stat-lbl { display: block; font-size: 0.68rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 0.2rem; }
.stat-sep { width: 1px; height: 36px; background: var(--border); }

.scroll-hint {
  position: absolute; bottom: 1.2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  z-index: 2; opacity: 0;
}
.scroll-hint span { font-family: var(--mono); font-size: 0.6rem; color: var(--text3); letter-spacing: 0.2em; text-transform: uppercase; }
.scroll-mouse { width: 20px; height: 32px; border: 1.5px solid var(--text3); border-radius: 10px; display: flex; justify-content: center; padding-top: 5px; }
.scroll-wheel { width: 3px; height: 6px; background: var(--accent); border-radius: 2px; animation: scrollW 2s ease infinite; }
@keyframes scrollW { 0%{transform:translateY(0);opacity:1} 80%{transform:translateY(10px);opacity:0} 100%{transform:translateY(0);opacity:0} }

/* ── Hero HUD & Dashboard overlays ─────────────── */
.hud-corner {
  position: absolute; width: 22px; height: 22px;
  z-index: 2; pointer-events: none;
  transition: border-color 0.6s;
}
.hud-tl { top: 4.8rem; left: 2rem;  border-top:    1.5px solid var(--accent); border-left:  1.5px solid var(--accent); }
.hud-tr { top: 4.8rem; right: 2rem; border-top:    1.5px solid var(--accent); border-right: 1.5px solid var(--accent); }
.hud-bl { bottom: 5.5rem; left: 2rem;  border-bottom: 1.5px solid var(--accent); border-left:  1.5px solid var(--accent); }
.hud-br { bottom: 5.5rem; right: 2rem; border-bottom: 1.5px solid var(--accent); border-right: 1.5px solid var(--accent); }

.hero-breadcrumb {
  position: absolute; top: 5.1rem; left: 3rem; z-index: 2;
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 0.6rem;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--text3);
}
.hero-breadcrumb > span { color: var(--text2); }
.hb-sep { color: var(--text3) !important; }
.hb-active {
  display: flex; align-items: center; gap: 0.4rem;
  color: #27c93f !important; margin-left: 0.9rem; font-size: 0.58rem;
}
.hb-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: #27c93f; box-shadow: 0 0 8px #27c93f;
  animation: dotPulse 2s ease infinite; flex-shrink: 0;
}
.hero-sys-status {
  position: absolute; top: 5.1rem; right: 3rem; z-index: 2;
  font-family: var(--mono); font-size: 0.6rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: #27c93f; display: flex; align-items: center; gap: 0.5rem;
}
.hss-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #27c93f; box-shadow: 0 0 8px #27c93f;
  animation: dotPulse 2s ease infinite; flex-shrink: 0;
}
@media (max-width: 640px) {
  .hud-corner, .hero-breadcrumb, .hero-sys-status { display: none; }
}

/* ── Buttons ───────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.8rem 2rem; border-radius: 8px;
  font-family: var(--font); font-size: 0.88rem; font-weight: 600;
  cursor: none; border: none; position: relative; overflow: hidden;
  transition: all 0.3s var(--ease); letter-spacing: 0.02em;
}
.btn-primary { background: var(--accent); color: #000; box-shadow: 0 0 20px var(--glow); }
.btn-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.25), transparent);
  transform: translateX(-100%) skewX(-20deg); transition: transform 0.5s var(--ease);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 35px var(--accent); }
.btn-primary:hover::before { transform: translateX(200%) skewX(-20deg); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid rgba(255,255,255,0.15); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }
.btn-ghost { background: rgba(255,255,255,0.04); color: var(--text2); border: 1px solid var(--border); }
.btn-ghost:hover { background: rgba(255,255,255,0.08); transform: translateY(-3px); }
.btn-full { width: 100%; justify-content: center; }

/* ── Section base ──────────────────────────────── */
section { padding: 8rem 0; position: relative; }
#hero { padding: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section-header { margin-bottom: 4rem; }
.s-tag { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.18em; text-transform: uppercase; display: block; margin-bottom: 0.7rem; transition: color 0.5s; }
.section-header h2 { font-size: clamp(2.2rem, 4.5vw, 3.3rem); font-weight: 700; line-height: 1.05; }
.s-sub { margin-top: 0.75rem; color: var(--text2); font-size: 1rem; max-width: 540px; }

/* Background grid */
.bg-grid { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bg-grid::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--glow) 1px, transparent 1px), linear-gradient(90deg, var(--glow) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 0%, transparent 72%);
  transition: background-image 0.6s;
  opacity: 0.4;
}

/* Reveal animations */
.g-reveal { opacity: 0; transform: translateY(48px); }
.g-reveal.from-left  { transform: translateX(-50px); }
.g-reveal.from-right { transform: translateX(50px); }

/* ── ABOUT ─────────────────────────────────────── */
#about { background: var(--bg2); }
.about-wrap { display: grid; grid-template-columns: 340px 1fr; gap: 5rem; align-items: center; }

/* Profile photo */
.profile-ring-wrap {
  position: relative; width: 260px; height: 260px; margin: 0 auto 2rem;
}
.profile-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid transparent; animation: ringRotate 8s linear infinite;
}
.r1 { inset: -14px; border-color: var(--accent); opacity: 0.5; animation-duration: 8s; }
.r2 { inset: -28px; border-color: var(--accent2); opacity: 0.3; animation-duration: 12s; animation-direction: reverse; }
.r3 { inset: -44px; border: 1px dashed var(--accent); opacity: 0.15; animation-duration: 18s; }
@keyframes ringRotate { to { transform: rotate(360deg); } }

.profile-img {
  width: 260px; height: 260px; border-radius: 50%;
  object-fit: cover; object-position: center top;
  border: 3px solid var(--accent);
  box-shadow: 0 0 40px var(--glow), 0 0 80px var(--glow);
  transition: box-shadow 0.5s, border-color 0.5s;
  position: relative; z-index: 1;
  display: block;
}
.profile-badge {
  position: absolute; bottom: 10px; right: -10px; z-index: 2;
  background: var(--bg2); border: 1px solid var(--accent);
  border-radius: 50px; padding: 0.3rem 0.9rem;
  font-size: 0.72rem; font-weight: 600; color: var(--accent);
  display: flex; align-items: center; gap: 0.4rem;
  box-shadow: 0 0 15px var(--glow);
}
.pb-dot { width: 7px; height: 7px; border-radius: 50%; background: #27c93f; box-shadow: 0 0 6px #27c93f; animation: dotPulse 2s ease infinite; }

.scholar-stats {
  display: flex; gap: 1rem; justify-content: center;
}
.ss-item { text-align: center; flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 0.8rem 0.5rem; transition: border-color 0.3s; }
.ss-item:hover { border-color: var(--accent); }
.ss-num { display: block; font-family: var(--mono); font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.ss-lbl { font-size: 0.68rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em; }

.about-text .intro { font-size: 1.1rem; color: var(--text); margin-bottom: 1.2rem; line-height: 1.8; }
.about-text p { color: var(--text2); margin-bottom: 1rem; line-height: 1.85; }
.about-text strong { color: var(--text); }
.about-links { display: flex; gap: 0.65rem; flex-wrap: wrap; margin-bottom: 1.8rem; }
.social-link {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.5rem 1rem; border: 1px solid var(--border); border-radius: 7px;
  font-size: 0.8rem; font-weight: 500; color: var(--text2);
  transition: all 0.25s; position: relative; overflow: hidden;
}
.social-link:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 15px var(--glow); }
.social-link.scholar:hover { border-color: #4285f4; color: #4285f4; }

/* Terminal */
.terminal { border: 1px solid rgba(255,255,255,0.06); border-radius: 12px; overflow: hidden; background: #03060f; }
.term-header { display: flex; align-items: center; gap: 0.75rem; padding: 0.8rem 1.2rem; background: rgba(0,0,0,0.35); border-bottom: 1px solid rgba(255,255,255,0.05); }
.term-dots { display: flex; gap: 6px; }
.td { width: 12px; height: 12px; border-radius: 50%; }
.td-r{background:#ff5f56} .td-y{background:#ffbd2e} .td-g{background:#27c93f}
.term-name { font-family: var(--mono); font-size: 0.7rem; color: var(--text3); margin: 0 auto; }
.term-body { padding: 1.4rem 1.6rem; }
.term-body pre { font-family: var(--mono); font-size: 0.78rem; line-height: 1.9; overflow: auto; }
.t-b{color:#e2e8f0} .t-k{color:#7dd3fc} .t-s{color:#86efac} .t-num{color:#fb923c}
.t-on { color: var(--accent); animation: blink 1.4s step-end infinite; transition: color 0.5s; }

/* ── PROJECTS ──────────────────────────────────── */
#projects { background: var(--bg); }
.projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }

.pcard {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.8rem; overflow: hidden; cursor: none;
  transition: border-color 0.3s, box-shadow 0.3s;
  transform-style: preserve-3d; will-change: transform;
}
.pcard-stripe {
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  opacity: 0.7; transition: opacity 0.3s;
}
.pcard:hover .pcard-stripe { opacity: 1; }
.pcard:hover { border-color: rgba(255,255,255,0.12); box-shadow: 0 24px 60px rgba(0,0,0,0.5); }
.pcard-glow {
  position: absolute; width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
  transform: translate(-50%,-50%); opacity: 0; transition: opacity 0.3s; z-index: 0;
}
.pcard:hover .pcard-glow { opacity: 1; }
.pcard > *:not(.pcard-glow):not(.pcard-stripe) { position: relative; z-index: 1; }
.pcard-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.pcard-icon { font-size: 1.7rem; filter: drop-shadow(0 0 6px var(--accent)); }
.pcard-gh { color: var(--text3); transition: color 0.2s, transform 0.2s; }
.pcard-gh:hover { color: var(--accent); transform: translateY(-2px); }
.pcard-feat { display: inline-block; font-family: var(--mono); font-size: 0.63rem; color: var(--accent); background: var(--glow); border: 1px solid var(--accent); padding: 0.18rem 0.6rem; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; transition: all 0.5s; }
.pcard h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.6rem; }
.pcard p { font-size: 0.85rem; color: var(--text2); line-height: 1.75; margin-bottom: 1.2rem; }
.pcard-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag { font-family: var(--mono); font-size: 0.66rem; padding: 0.22rem 0.6rem; border-radius: 4px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); color: var(--text2); transition: all 0.25s; }
.pcard:hover .tag { border-color: rgba(255,255,255,0.1); }
.pcard.featured { grid-column: span 2; }

/* ── LAB ───────────────────────────────────────── */
#lab { background: var(--bg); }

.lab-grid {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: start;
}

.lab-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color 0.35s, box-shadow 0.35s, transform 0.35s var(--ease);
}
.lab-card:hover {
  border-color: var(--accent);
  box-shadow: 0 16px 50px var(--glow);
  transform: translateY(-4px);
}

/* Portrait wrapper — 9:16 for Shorts */
.lab-video-wrap { position: relative; overflow: hidden; background: #000; }
.lab-portrait  { padding-top: 177.78%; }
.lab-landscape { padding-top:  56.25%; }
.lab-video-wrap iframe {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; border: none;
}

.lab-info { padding: 1.6rem; }
.lab-badge {
  display: inline-block; font-family: var(--mono); font-size: 0.62rem;
  color: var(--accent); background: var(--glow);
  border: 1px solid var(--accent);
  padding: 0.18rem 0.65rem; border-radius: 4px;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 0.65rem;
}
.lab-info h3 { font-size: 1.08rem; font-weight: 600; margin-bottom: 0.5rem; }
.lab-info p  { font-size: 0.85rem; color: var(--text2); line-height: 1.75; margin-bottom: 1.1rem; }

/* Lab stats bar */
.lab-stats {
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden;
  border-top: 2px solid var(--accent);
}
.ls-item {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 1.2rem 2.5rem; flex: 1; min-width: 200px;
}
.ls-icon  { font-size: 1.3rem; }
.ls-label { font-size: 0.82rem; color: var(--text2); font-weight: 500; }
.ls-sep   { width: 1px; height: 40px; background: var(--border); }

@media (max-width: 900px)  { .lab-grid { grid-template-columns: 1fr; } }
@media (max-width: 640px)  { .ls-sep { display: none; } .ls-item { padding: 1rem 1.5rem; } }

/* ── PUBLICATIONS ──────────────────────────────── */
#publications { background: var(--bg2); }

.scholar-header { margin-bottom: 3rem; }
.scholar-profile-link {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1.5rem 2rem; background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; transition: all 0.3s; flex-wrap: wrap;
}
.scholar-profile-link:hover { border-color: var(--accent); box-shadow: 0 8px 40px var(--glow); }
.scholar-thumb { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); flex-shrink: 0; }
.sp-name { font-size: 1rem; font-weight: 600; color: var(--text); }
.sp-aff { font-size: 0.8rem; color: var(--text2); margin-top: 0.1rem; }
.scholar-metrics { display: flex; gap: 2rem; margin-left: auto; }
.sm-item { text-align: center; }
.sm-n { display: block; font-family: var(--mono); font-size: 1.3rem; font-weight: 700; color: var(--accent); }
.sm-l { font-size: 0.68rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em; }
.scholar-arrow { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); white-space: nowrap; padding-left: 1rem; opacity: 0.7; transition: opacity 0.3s, transform 0.3s; }
.scholar-profile-link:hover .scholar-arrow { opacity: 1; transform: translateX(4px); }

.pub-list { display: flex; flex-direction: column; gap: 1.2rem; }
.pub-card {
  display: flex; align-items: flex-start; gap: 1.5rem;
  padding: 1.75rem; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; transition: all 0.3s; position: relative; overflow: hidden;
}
.pub-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2));
  transform: scaleY(0); transform-origin: top;
  transition: transform 0.4s var(--ease);
}
.pub-card:hover::before { transform: scaleY(1); }
.pub-card:hover { border-color: rgba(255,255,255,0.1); transform: translateX(6px); box-shadow: 0 8px 40px rgba(0,0,0,0.3); }

.pub-year {
  font-family: var(--mono); font-size: 0.75rem; color: var(--accent);
  background: var(--glow); border: 1px solid var(--accent);
  padding: 0.3rem 0.65rem; border-radius: 6px;
  white-space: nowrap; flex-shrink: 0; transition: all 0.5s;
  height: fit-content;
}
.pub-body { flex: 1; }
.pub-cite { font-family: var(--mono); font-size: 0.68rem; color: var(--text3); margin-bottom: 0.5rem; }
.pub-cite-n { color: var(--accent); font-weight: 700; }
.pub-title { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 0.4rem; line-height: 1.5; }
.pub-authors { font-size: 0.8rem; color: var(--text2); margin-bottom: 0.75rem; }
.pub-me { color: var(--accent); font-weight: 600; transition: color 0.5s; }
.pub-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ptag { font-family: var(--mono); font-size: 0.65rem; padding: 0.18rem 0.55rem; border-radius: 4px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); color: var(--text3); }
.pub-link {
  font-family: var(--mono); font-size: 0.75rem; color: var(--accent);
  white-space: nowrap; flex-shrink: 0; opacity: 0.6;
  transition: opacity 0.3s, transform 0.3s;
  padding-top: 0.2rem;
}
.pub-card:hover .pub-link { opacity: 1; transform: translateX(4px); }

/* ── SKILLS ────────────────────────────────────── */
#skills { background: var(--bg); }
.skills-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.scat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.6rem;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}
.scat::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: scaleX(0); transition: transform 0.4s var(--ease);
}
.scat:hover { border-color: var(--glow); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.scat:hover::after { transform: scaleX(1); }
.scat-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }
.scat-icon { font-size: 1.2rem; }
.scat h4 { font-size: 0.88rem; font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  font-family: var(--mono); font-size: 0.68rem;
  padding: 0.28rem 0.7rem; border-radius: 6px;
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  color: var(--text2); cursor: none; transition: all 0.2s;
}
.chip:hover { background: var(--glow); border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 12px var(--glow); }

/* ── RESILIENCE ────────────────────────────────── */
#failures { background: var(--bg2); }
.fail-quote {
  position: relative; background: rgba(249,115,22,0.06);
  border: 1px solid rgba(249,115,22,0.2); border-radius: 14px;
  padding: 2.2rem 2.8rem; margin-bottom: 4rem; overflow: hidden;
}
.fail-quote::before {
  content: '"'; position: absolute; top: -1.5rem; left: 1rem;
  font-size: 9rem; font-weight: 900; color: rgba(249,115,22,0.07);
  line-height: 1; font-family: Georgia, serif; pointer-events: none;
}
.fail-quote blockquote { font-size: 1.25rem; font-style: italic; color: var(--text); margin-bottom: 0.6rem; position: relative; z-index: 1; }
.fail-quote p { color: var(--text2); font-size: 0.9rem; position: relative; z-index: 1; }

.timeline { position: relative; padding-left: 3.5rem; }
.timeline::before { content: ''; position: absolute; left: 12px; top: 0; bottom: 0; width: 1px; background: linear-gradient(to bottom, rgba(249,115,22,0.5), transparent); }
.tl-item { position: relative; margin-bottom: 3rem; }
.tl-marker {
  position: absolute; left: -3.6rem; top: 4px;
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid var(--border); background: var(--bg2);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; z-index: 1; transition: all 0.3s;
}
.tl-item:hover .tl-marker { border-color: var(--accent); background: var(--glow); box-shadow: 0 0 16px var(--glow); }
.tl-body {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.8rem;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.tl-item:hover .tl-body { border-color: rgba(249,115,22,0.25); transform: translateX(6px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.tl-badge { display: inline-block; font-family: var(--mono); font-size: 0.63rem; padding: 0.18rem 0.6rem; border-radius: 4px; margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; }
.tl-badge.rej   { background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
.tl-badge.fail  { background: rgba(251,191,36,0.1); color: #fbbf24; border: 1px solid rgba(251,191,36,0.2); }
.tl-badge.paper { background: rgba(167,139,250,0.1); color: #a78bfa; border: 1px solid rgba(167,139,250,0.2); }
.tl-body h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.6rem; }
.tl-body p { font-size: 0.86rem; color: var(--text2); line-height: 1.8; margin-bottom: 1rem; }
.tl-lesson { display: flex; align-items: baseline; gap: 0.6rem; font-size: 0.84rem; color: var(--text2); font-style: italic; padding-top: 0.8rem; border-top: 1px solid var(--border); }
.lesson-lbl { font-family: var(--mono); font-size: 0.62rem; color: var(--accent); background: var(--glow); border: 1px solid var(--accent); padding: 0.12rem 0.5rem; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.08em; font-style: normal; white-space: nowrap; transition: all 0.5s; }
.fail-end { margin-top: 3rem; padding: 1.8rem 2.2rem; border: 1px dashed rgba(249,115,22,0.2); border-radius: 12px; color: var(--text2); font-size: 0.92rem; line-height: 1.8; }
.fail-end strong { color: var(--text); }

/* ── CONTACT ───────────────────────────────────── */
#contact { background: var(--bg); }
.contact-wrap { display: grid; grid-template-columns: 1fr 370px; gap: 4rem; align-items: start; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.77rem; color: var(--text2); margin-bottom: 0.38rem; letter-spacing: 0.03em; }
.form-group input, .form-group textarea {
  width: 100%; padding: 0.78rem 1rem;
  background: rgba(255,255,255,0.02); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: var(--font); font-size: 0.88rem; outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); background: var(--glow); box-shadow: 0 0 0 3px var(--glow); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text3); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-note { text-align: center; font-size: 0.7rem; color: var(--text3); margin-top: 0.7rem; }
.c-links { display: flex; flex-direction: column; gap: 0.9rem; margin-bottom: 1.5rem; }
.c-link {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem;
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  transition: all 0.25s var(--ease); position: relative; overflow: hidden;
}
.c-link::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--accent); transform: scaleY(0); transition: transform 0.3s var(--ease); }
.c-link:hover { border-color: var(--glow); transform: translateX(5px); }
.c-link:hover::before { transform: scaleY(1); }
.c-link-icon { width: 44px; height: 44px; background: var(--glow); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent); flex-shrink: 0; transition: box-shadow 0.3s; }
.c-link:hover .c-link-icon { box-shadow: 0 0 18px var(--glow); }
.c-link-title { display: block; font-size: 0.88rem; font-weight: 600; color: var(--text); }
.c-link-sub { display: block; font-size: 0.73rem; color: var(--text3); font-family: var(--mono); margin-top: 0.1rem; }
.avail { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1.2rem; border: 1px solid rgba(39,201,63,0.3); border-radius: 50px; background: rgba(39,201,63,0.04); font-size: 0.82rem; color: var(--text2); }
.avail-dot { width: 8px; height: 8px; border-radius: 50%; background: #27c93f; box-shadow: 0 0 8px #27c93f; animation: dotPulse 2s ease infinite; }

/* ── Footer ────────────────────────────────────── */
footer { background: #02020a; border-top: 1px solid var(--border); padding: 2.5rem 0; }
.foot-inner { display: flex; flex-direction: column; align-items: center; gap: 0.4rem; text-align: center; }
.foot-photo { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); margin-bottom: 0.25rem; box-shadow: 0 0 20px var(--glow); transition: all 0.5s; }
.foot-logo { font-family: var(--mono); font-size: 1.2rem; font-weight: 700; }
footer p { font-size: 0.8rem; color: var(--text3); }
.foot-stack { font-family: var(--mono); font-size: 0.67rem; }

/* ══════════════════════════════════════════════
   EXPERIENCE SECTION
══════════════════════════════════════════════ */
#experience {
  background: var(--bg2);
  position: relative;
  overflow: hidden;
}
[data-color="teal"] { --accent:#06b6d4; --accent2:#0e7490; --glow:rgba(6,182,212,0.2); }

/* Background 3D canvas */
.exp-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  opacity: 0.35;
}

/* Journey SVG path */
.journey-path {
  margin: -1rem 0 3rem;
  opacity: 0.7;
}
.path-svg { width: 100%; height: 60px; overflow: visible; }
#journeyLine { transition: stroke-dashoffset 1.8s cubic-bezier(0.4,0,0.2,1); }

/* Experience grid */
.exp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

/* Individual card */
.exp-card {
  perspective: 1000px;
  height: 360px;
  cursor: none;
}
.exp-card-inner {
  position: relative;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.75s cubic-bezier(0.4,0,0.2,1);
}
.exp-card:hover .exp-card-inner { transform: rotateY(180deg); }

/* Front */
.exp-card-front, .exp-card-back {
  position: absolute; inset: 0;
  border-radius: 16px;
  padding: 1.8rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.exp-card-front {
  background: var(--card);
  border: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.exp-card:hover .exp-card-front {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--glow);
}
.exp-card-back {
  background: linear-gradient(135deg, var(--bg) 0%, #060d20 100%);
  border: 1px solid var(--accent);
  transform: rotateY(180deg);
  box-shadow: 0 0 40px var(--glow);
  display: flex; flex-direction: column; gap: 0.75rem;
}
.exp-card-back h4 {
  font-size: 0.85rem; font-weight: 700;
  color: var(--accent); text-transform: uppercase;
  letter-spacing: 0.1em; margin-bottom: 0.25rem;
}
.exp-card-back ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.exp-card-back ul li {
  font-size: 0.8rem; color: var(--text2); line-height: 1.5;
  padding-left: 1rem; position: relative;
}
.exp-card-back ul li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--accent); font-size: 0.75rem;
}
.exp-back-label {
  font-family: var(--mono); font-size: 0.65rem;
  color: var(--text3); border-top: 1px solid var(--border);
  padding-top: 0.6rem; margin-top: auto;
}

/* Card elements */
.exp-num {
  font-family: var(--mono); font-size: 2.5rem; font-weight: 700;
  color: rgba(255,255,255,0.04); position: absolute;
  top: 1rem; right: 1.2rem; line-height: 1; pointer-events: none;
}
.exp-period-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--mono); font-size: 0.68rem;
  color: var(--accent); background: var(--glow);
  border: 1px solid var(--accent);
  padding: 0.22rem 0.7rem; border-radius: 50px;
  margin-bottom: 0.9rem; width: fit-content;
  transition: all 0.5s;
}
.active-badge {
  background: rgba(16,185,129,0.12); border-color: #10b981; color: #10b981;
  animation: activePulseGlow 2s ease infinite;
}
@keyframes activePulseGlow {
  0%,100% { box-shadow: 0 0 0 0 rgba(16,185,129,0.3); }
  50%      { box-shadow: 0 0 0 6px rgba(16,185,129,0); }
}
.active-pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: #10b981; box-shadow: 0 0 6px #10b981;
  animation: dotPulse 2s ease infinite; display: inline-block;
}

.exp-icon-wrap {
  display: flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  background: var(--glow); border-radius: 14px;
  border: 1px solid var(--border);
  margin-bottom: 1rem; position: relative;
  transition: all 0.3s;
}
.exp-card:hover .exp-icon-wrap {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--glow);
  transform: scale(1.05);
}
.exp-emoji { font-size: 1.6rem; line-height: 1; filter: drop-shadow(0 0 6px var(--accent)); }

.exp-company {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--accent); letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 0.3rem;
  transition: color 0.5s;
}
.exp-card h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.5rem; line-height: 1.35; }
.exp-role-type {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.75rem; color: var(--text3); margin-bottom: auto;
}
.exp-dot-sm {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text3); display: inline-block; flex-shrink: 0;
}
.exp-dot-sm.green { background: #10b981; box-shadow: 0 0 6px #10b981; animation: dotPulse 2s ease infinite; }

.exp-tags-sm {
  display: flex; flex-wrap: wrap; gap: 0.35rem;
  margin-top: 0.85rem;
}
.exp-tags-sm span {
  font-family: var(--mono); font-size: 0.62rem;
  padding: 0.18rem 0.55rem; border-radius: 4px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); color: var(--text3);
}

/* Pivot / active card special styles */
.pivot-card .exp-card-front {
  border-color: rgba(139,92,246,0.2);
  background: linear-gradient(135deg, var(--card) 0%, rgba(139,92,246,0.04) 100%);
}
.active-card .exp-card-front {
  border-color: rgba(16,185,129,0.25);
  background: linear-gradient(135deg, var(--card) 0%, rgba(16,185,129,0.04) 100%);
  box-shadow: 0 0 30px rgba(16,185,129,0.06);
}

/* Hint text */
.exp-card::after {
  content: 'Hover to flip →';
  position: absolute; bottom: -1.8rem; left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono); font-size: 0.6rem;
  color: var(--text3); letter-spacing: 0.1em;
  opacity: 0; transition: opacity 0.3s;
  white-space: nowrap;
}
.exp-card:hover::after { opacity: 1; }

/* Stats bar */
.exp-stats {
  display: flex; align-items: center; justify-content: center;
  gap: 3rem; margin-top: 4rem;
  padding: 2rem 3rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  position: relative; overflow: hidden;
}
.exp-stats::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4, #10b981);
}
.es-item { text-align: center; }
.es-num {
  font-family: var(--mono); font-size: 2.2rem; font-weight: 700;
  color: var(--accent); display: inline;
  text-shadow: 0 0 20px var(--glow);
  transition: color 0.5s;
}
.es-unit { font-family: var(--mono); font-size: 1.4rem; color: var(--accent); transition: color 0.5s; }
.es-lbl { display: block; font-size: 0.72rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 0.2rem; }
.es-sep { width: 1px; height: 48px; background: var(--border); }

/* ═══════════════════════════════════════════════
   RESPONSIVE — Mobile-first polish
═══════════════════════════════════════════════ */

/* Global overflow guard */
html { overflow-x: hidden; }
/* Allow flex/grid children to shrink below content size */
*, *::before, *::after { min-width: 0; }
/* Terminal must never bust out of its column */
.terminal { max-width: 100%; overflow: hidden; }
.term-body pre { overflow-x: auto; max-width: 100%; }

/* ── 1024px — Tablet landscape ─────────────── */
@media (max-width: 1024px) {
  .exp-grid            { grid-template-columns: repeat(2,1fr); }
  .exp-stats           { gap: 1.5rem; padding: 1.5rem 2rem; }
  .about-wrap          { grid-template-columns: 1fr; gap: 3rem; }
  .profile-ring-wrap   { width: 200px; height: 200px; }
  .profile-img         { width: 200px; height: 200px; }
  .projects-grid       { grid-template-columns: repeat(2,1fr); }
  .pcard.featured      { grid-column: span 2; }
  .skills-grid         { grid-template-columns: repeat(2,1fr); }
  .contact-wrap        { grid-template-columns: 1fr; gap: 2.5rem; }
  .scholar-metrics     { gap: 1rem; }
}

/* ── 768px — Tablet portrait / large phone ── */
@media (max-width: 768px) {
  /* Navbar */
  #navbar              { padding: 1rem 1.5rem; }
  #navbar.scrolled     { padding: 0.8rem 1.5rem; }
  .nav-links           { display: none; }
  .nav-toggle          { display: flex; }

  /* Sections */
  section              { padding: 5rem 0; }
  .section-header h2   { font-size: clamp(1.9rem, 6vw, 2.8rem); }
  .s-sub               { font-size: 0.9rem; }

  /* Hero */
  .hero-stats          { display: none; }
  .hero-content        { padding: 0 1.5rem; }
  .hero-eyebrow        { font-size: 0.65rem; letter-spacing: 0.12em; }

  /* About */
  .about-wrap          { grid-template-columns: 1fr !important; }
  .profile-ring-wrap   { width: 180px; height: 180px; }
  .profile-img         { width: 180px; height: 180px; }
  .r1                  { inset: -10px; }
  .r2                  { inset: -18px; }
  .r3                  { inset: -26px; }

  /* Experience */
  .exp-grid            { grid-template-columns: 1fr; }
  .exp-card            { height: auto; perspective: none; }
  .exp-card-inner      { transform-style: flat; }
  .exp-card:hover .exp-card-inner { transform: none; }
  .exp-card-back       { display: none; }
  .exp-card-front      { position: relative; border-radius: 16px; }
  .exp-stats           { flex-wrap: wrap; gap: 1.5rem; }

  /* Projects */
  .projects-grid       { grid-template-columns: 1fr; }
  .pcard.featured      { grid-column: span 1; }

  /* Publications */
  .pub-card            { flex-direction: column; gap: 1rem; }
  .scholar-profile-link { flex-direction: column; align-items: flex-start; }
  .scholar-metrics     { margin-left: 0; }

  /* Skills */
  .skills-grid         { grid-template-columns: 1fr; }

  /* Contact */
  .contact-wrap        { grid-template-columns: 1fr; }
  .contact-form input,
  .contact-form textarea { width: 100%; box-sizing: border-box; }

  /* Timeline */
  .timeline            { padding-left: 2.5rem; }
  .tl-marker           { left: -2.7rem; }
}

/* ── 480px — Phones ─────────────────────────── */
@media (max-width: 480px) {
  .container           { padding: 0 1.2rem; }
  section              { padding: 4rem 0; }
  .section-header      { margin-bottom: 2.5rem; }
  .section-header h2   { font-size: clamp(1.7rem, 8vw, 2.4rem); }

  /* Hero */
  .hero-title          { font-size: clamp(2.5rem, 11vw, 3.2rem); }
  .hero-typed          { font-size: 0.92rem; padding: 0 0.5rem; }
  .hero-eyebrow        { font-size: 0.6rem; letter-spacing: 0.1em; padding: 0.35rem 0.8rem; }
  .hero-cta            { flex-direction: column; align-items: center; gap: 0.75rem; }
  .btn                 { padding: 0.7rem 1.5rem; width: 100%; max-width: 260px; justify-content: center; }

  /* About */
  .profile-ring-wrap   { width: 150px; height: 150px; }
  .profile-img         { width: 150px; height: 150px; }
  .r1                  { inset: -8px; }
  .r2                  { inset: -14px; }
  .r3                  { inset: -20px; }
  .scholar-stats       { gap: 0.5rem; }
  .ss-item             { padding: 0.65rem 0.4rem; }
  .ss-num              { font-size: 1.1rem; }
  .about-text .intro   { font-size: 0.95rem; }
  .about-links         { gap: 0.5rem; }
  .social-link         { font-size: 0.76rem; padding: 0.45rem 0.8rem; }

  /* Experience */
  .es-num              { font-size: 1.5rem; }
  .es-label            { font-size: 0.62rem; }
  .es-sep              { display: none; }
  .exp-stats           { justify-content: center; gap: 1rem; }

  /* Projects */
  .pcard               { padding: 1.4rem; }
  .pcard h3            { font-size: 0.95rem; }

  /* Lab */
  .lab-info h3         { font-size: 0.95rem; }
  .lab-info p          { font-size: 0.82rem; }
  .ls-sep              { display: none; }
  .ls-item             { padding: 0.9rem 1rem; }
  .ls-label            { font-size: 0.78rem; }
  .ls-icon             { font-size: 1.1rem; }

  /* Publications */
  .pub-year            { display: none; }
  .pub-title           { font-size: 0.88rem; }

  /* Skills */
  .chip                { font-size: 0.7rem; padding: 0.3rem 0.7rem; }
  .scat                { padding: 1.2rem; }
  .scat-title          { font-size: 0.88rem; }

  /* Contact */
  .c-link              { padding: 0.9rem 1rem; }
  .c-link-icon         { width: 38px; height: 38px; }
  .c-link-title        { font-size: 0.85rem; }
  .c-link-sub          { font-size: 0.7rem; }
  .form-note           { font-size: 0.75rem; }
}

/* ── 360px — Small phones ───────────────────── */
@media (max-width: 360px) {
  .container           { padding: 0 1rem; }
  .hero-title          { font-size: 2.2rem; }
  .hero-eyebrow        { display: none; }
  .nav-logo            { font-size: 1.1rem; }
  .nav-photo           { width: 26px; height: 26px; }
}